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Possible definitions for qaids

AIDS
Fatal transmissible disorder caused by HIV. AIDS, the last stage of HIV infection, is defined by the appearance of potentially lethal opportunistic infections. The first AIDS cases were identified in 1981, HIV was isolated in 1983, and blood tests were developed by 1985. In 2000, more than 35 million people worldwide were living with HIV, and over 15 million had died of AIDS. In the U.S., some 2 million people had been infected with HIV, 800,000 had been diagnosed with AIDS, and 450,000 had died. Sub-Saharan Africa remains the focus of infection, but the number of cases in S. and S.E. Asia and elsewhere continues to mount at an alarming rate as well. An initial acute illness usually resolves within weeks. Infected persons then generally have few or no symptoms for about 10 years. As the immune system deteriorates, they develop diseases such as Pneumocystis carinii pneumonia, cytomegalovirus, lymphoma, or Kaposi's sarcoma.


Ards
District (pop., 1995 est.: 67,000), Northern Ireland. Formerly part of Co. Downs, Ards was established as a district in 1973. Much of its land is devoted to crops and pasture. Newtownards, settled c.1608 by Scots, is its administrative seat and manufacturing center. Donaghadee is a popular resort town.


caisson
In engineering, a type of foundation most commonly used underwater for a bridge, but sometimes used in building construction. It is a large hollow structure that is sunk down through the earth by workers excavating from inside it; ultimately it becomes a permanent part of the pier. There are three types: the open caisson, open at both top and bottom; the box caisson, closed at the bottom; and the pneumatic caisson, with an airtight chamber to accommodate submerged workers. Caisson columns, typically 2 ft (0.6 m) or more in diameter, may be used as an alternative to bearing piles. A round hole is dug or bored to a stable layer of earth and temporarily supported by a steel shell, then filled with concrete poured around a cage of reinforcing bars.


Haida
Northwest Coast Indian people of the Queen Charlotte Islands, British Columbia, and S Prince of Wales Island, Alaska. There were two major tribal divisions, or moieties, to one of which a child was assigned at birth based on maternal descent. Each moiety consisted of lineages that owned rights to land, had their own chiefs, waged war, held ceremonies such as potlatches, and functioned as economically independent units. Haida economy was based on fishing and hunting. The Haida continue to be known for their craftsmanship and their art, which includes totem poles. Today they number about 3,500.


Landsat
Any of a series of unmanned U.S. scientific satellites. The first three were launched in 1972, 1975, and 1978. They were designed mainly to collect information about earth's natural resources. They were also equipped to monitor atmospheric and oceanic conditions and to detect ...

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